>>55397891Ludicolo is shilled pretty hard in the anime and side games, plus it made it into the top 30 of that fan vote a while back.
Wailmer is just iconic, everyone knows what Pokemon it is and what it looks like (it helps that it's basically just a whale but still, to deny that there could be a single Pokemon fan who doesn't know what a Wailmer is is pretty dumb I think, but I'm fairly certain a considerable percentage of Pokemon fans have no idea what a Burmy or Chatot is)
Walrein I just included cause it's Spheal's evolution, which is incredibly popular with women. I guess I could have just said Spheal but whatever I like to refer to full evolution lines.
Slaking has basically the same status Miltank does in Gen 2 as a big difficulty spike gym leader mon.
Shedinja is like, THE gimmick mon.
Corphish was on Ash's team, though I admit that might not be enough to save it from irrelevancy, especially when I ignored Croagunk for Sinnoh.
I'm willing to let Cradily go though, just replace it with Sableye and you can put Mawile there too.